1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 1999 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #pragma ident "%Z%%M% %I% %E% SMI"
28
29 #include <sys/types.h>
30 #include <sys/byteorder.h>
31
32
33 /*
34 * functions to convert between host format and scsi format
35 */
36 void
scsi_htos_3byte(unchar * ap,ulong nav)37 scsi_htos_3byte(unchar *ap, ulong nav)
38 {
39 *(ushort *)ap = (ushort)(((nav & 0xff0000) >> 16) | (nav & 0xff00));
40 ap[2] = (unchar)nav;
41 }
42
43 void
scsi_htos_long(unchar * ap,ulong niv)44 scsi_htos_long(unchar *ap, ulong niv)
45 {
46 *(ulong *)ap = htonl(niv);
47 }
48
49 void
scsi_htos_short(unchar * ap,ushort nsv)50 scsi_htos_short(unchar *ap, ushort nsv)
51 {
52 *(ushort *)ap = htons(nsv);
53 }
54
55 ulong
scsi_stoh_3byte(unchar * ap)56 scsi_stoh_3byte(unchar *ap)
57 {
58 register ulong av = *(ulong *)ap;
59
60 return (((av & 0xff) << 16) | (av & 0xff00) | ((av & 0xff0000) >> 16));
61 }
62
63 ulong
scsi_stoh_long(ulong ai)64 scsi_stoh_long(ulong ai)
65 {
66 return (ntohl(ai));
67 }
68
69 ushort
scsi_stoh_short(ushort as)70 scsi_stoh_short(ushort as)
71 {
72 return (ntohs(as));
73 }
74